Reconfiguration strategies to extract maximum power from photovoltaic array under partially shaded conditions

S. Malathy and R. Ramaprabha

Renewable and Sustainable Energy Reviews, 2018, vol. 81, issue P2, 2922-2934

Abstract: The output of solar photovoltaic (SPV) system depends on various factors like bypass diode configuration, array size, array configuration, shade intensity, etc. besides the environmental conditions. Further, partial shaded conditions increase the mismatch losses and reduce the output of the photovoltaic (PV) array significantly. The size of the PV array is to be increased under such circumstances to meet the desired specifications. This, in turn, increases the return of investment period that makes power generation by PV systems less attractive. This paper focuses on the various techniques that could negate the impact of partial shading and enhance the output under such conditions. In order to improve the power extraction under partial shaded conditions, various solutions modifying either the power processing architecture or the PV generator architecture have already been proposed. This paper reviews the latter approach and proposes a static architecture to negate the impact of partial shading and enhance the energy yield under non-uniform irradiation conditions.

Keywords: PV; Partial shading; Enhancement; Dynamic reconfiguration; Repositioning; Static configuration (search for similar items in EconPapers)
Date: 2018
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Citations: View citations in EconPapers (19)

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DOI: 10.1016/j.rser.2017.06.100

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